Horse power to g-force

Starting with the tetherball analogy: Assuming the force would be applied to spinning the base of the tetherball pole what amount of horse power is needed to get the tetherball up to a speed of 36 miles per hour with these properties; tetherball poll (2 kilograms), string (1 meter) and ball (1.9 kilograms)?

At constant speed what is the max g-force?

If the process was reversed, 36 mph to zero, what would be the max g-force?

Starting with the tetherball analogy: Assuming the force would be applied to spinning the base of the tetherball pole what amount of horse power is needed to get the tetherball up to a speed of 36 miles per hour with these properties; tetherball poll (2 kilograms), string (1 meter) and ball (1.9 kilograms)?

At constant speed what is the max g-force?

If the process was reversed, 36 mph to zero, what would be the max g-force?

You should at least keep the units the same, 36 mph is 57.6 Kilometers/hour.
The other problem is you did not specify a time frame. Horsepower and such in terms of lifting power is defined as the ability to move or lift straight up 555 pounds (252.27 kg) one foot (304 mm, 30.4 cm) in one second. So if you could apply one hp to 555 pounds in space as an acceleration it would give 1/32 of a G, so 32 hp would accelerate 555 pounds in space at one G.

Whenever you are talking power or acceleration, you need to set a time restriction. Power is the amount of energy spent in a given time and acceleration is the amount of velocity variation in a given time.

Starting with the tetherball analogy: Assuming the force would be applied to spinning the base of the tetherball pole what amount of horse power is needed to get the tetherball up to a speed of 36 miles per hour with these properties; tetherball poll (2 kilograms), string (1 meter) and ball (1.9 kilograms)?